Can You Intercrop Different Plants in a Greenhouse Successfully?

Choosing the Right Companions

Intercropping is the practice of growing multiple crops together in a single growing space. In a greenhouse, this can be especially beneficial due to the controlled environment. When selecting companion plants, consider their growth habits, light and temperature requirements, and space needs. For example, planting marigolds with tomatoes can help deter nematodes and attract beneficial insects. A popular combination is planting basil with tomatoes, as basil repels pests that target tomatoes and adds flavor to the surrounding soil.

Planting Techniques

To intercrop successfully in a greenhouse, plant companion crops at the same time as the main crop or at the end of the growing season. Planting in rows with a 3-4 foot separation can help prevent overcrowding and promote air circulation. Some popular intercropping methods include the “Three Sisters” method, where corn, beans, and squash are planted together, and the “Polyculture” method, where multiple plants are planted in a single row. Research each technique to determine the best fit for your greenhouse.

Benefits and Considerations

Intercropping in a greenhouse can provide numerous benefits, including increased yields, reduced pests and diseases, and improved resource utilization. However, it also requires careful planning and management. Consider factors such as light and temperature requirements, watering needs, and nutrient competition when selecting companion plants. To avoid overcrowding and promote healthy growth, use a trellis or other support system for climbing plants, and prune or thin plants as necessary.